UPDATE: I'm in error, above. At first glance, the press release to which Sisu links looks like Kerry's using "images," but I misread that, and he's actually not. He's merely invoking them secondhand by referring to his own demand for Rumsfeld's ouster. Sorry. And thanks to reader Dick Riley for pointing out the error. Though Neal Boortz is saying the same thing. No link, though.
YET ANOTHER UPDATE: Hmm. Perhaps I was too quick to admit error. At least, this fundraising emaildoes invoke the images, though they're not actually shown unless they were attached in an HTML version or something:
Message from Mary Beth Cahill, Kerry Campaign Manager:
Dear Friend,
Over the past week we have all been shocked by the pictures from the Abu Ghraib prison in Iraq.
Not quite the same as running them in a TV commercial, but certainly making use of them.